This is the 144th most frequent Tamil word.
அடங
The Tamil word "அடங" means "to subside," "to cease," or "to be controlled."
Here, 'அடங்க' means to control or suppress.
உங்களின் உணர்ச்சிகளை அடங்க வைத்துக்கொள்ளுங்கள்.
Control your emotions.
Here, 'அடங்கு' as derivative 'அடக்கமான' conveys the quality of being humble or composed.
அவன் அடக்கமான ஒரு நல்ல மனிதர்.
He is a humble and calm person.
In this context, 'அடங்க' refers to something subsiding or stopping.